/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 高生平
 * Date: 2025-09-01
 * Time: 18:21
 */

//计算1/1-1/2+1/3-1/4+1/5 …… + 1/99 - 1/100 的值。

public class Test {
    public static void main(String[] args) {
        double sum = 0;
        for (int i = 1; i <= 100; i++) {
            if (i % 2 != 0) {
                sum += 1.0 / i;
            } else {
                sum += -1.0 / i;
            }
        }
        System.out.println("1/1-1/2+1/3-1/4+1/5 …… + 1/99 - 1/100 = " + sum);
    }
}
